I would never ever post a photo of me or my child in hospital.... but if I was that way inclined I would give an explanation. The attention she is seeking is unreal.
Funnily enough, I was just thinking she wont reveal what's up with him. She knows people will be checking in more frequent for an update.
This way, she can keep everyone interested and in a week or two, will come an explanation and probably an advert.
If she wanted to keep it private, keep it off your social media that you use for adverts and swipe ups and freebies.
It's like she doesn't know you are allowed to keep things to yourself. Everyone doesn't need to know your business!!